Locking device.



J. A.-KBYES.

LOCKING DEVICE.

APPLICATION FILED MAR. 16, 1912.

Patented Oct. 6, 1914.

INVLNTOR.

ATTORNEY.

WITNESSES: M 6% u THE NORRIS PETERS CO.. PHOTO-LITHQ, WASHINGTON. D. C.

h To aZZ whom it may concern .1

ames A. KEYns, or NEWYORK, N. Y;

LOCKING DEVIGEI Be 1t known that 1, JAMES Knyns, a

citizen of the United States, and resident of the city, county, and State of New York, have invented certain newt-and useful Improven'ients in Looking Devices, of which the following is aspecification.

This invention. relates to a locking device adapted for use in connection wlth any.

mechanism in which it is desired to control or lock the same against movement. 1

The ob cct of the lnventionis to provide a device fort-he purpose Set out which may be operated to lock Whenthe partsfare in .a given position and which: also Operates to permit a movement of the .parts towardor in the direction of thelocked position while preventing movement. awayfrom this position.

In carryingout the invention in the form shown in the drawings a shaft is provided which is connected to themechanism to be controlled o-rlocked. Upon this shaft are mounted a locking member 'or disk anda ratchet member. which arearrangedto be engaged by a locking .boltfahd a pawl respectively when the device is operated, all

members, the purpose of Iwhich will be exof which will be explained] more fully hereinafter in connection. withth'e description of the embodiments of the inventionasillustrated.

In the drawings like parts in the several views have been given the same reference numerals. n l i 1 Figure 1 is a front elevation of a locking device embodying the invention. Fig.2 is

a sectional side view, taken on the line 2 -2 of Fig.1. i A i y A base 1 is provided withia suitable hearing for the support of the shaft 2,to which is attached an arm 3 which is connected with the. mechanism. to be controlled or locked by the device.

A locking disk, a came and a ratchet disk 6 are secured to the shaft 2by means of the lock nut 7, which is arranged to hold these members against a. shoulder on theshaft so that the same rotate therewith and at the same time provide means for adjusting the relative position of the several plained more fully hereinafter,

The locking disk 4: is provided with a notch or recess 8 in the peripher thereof and a slidable member 9 1 is positioned so that one endenters the notch 8 when the d Specification of I-etters Patent. Application filed March 5, 1912- Patented Oct 6,1914.

Seria1No.684 ,098...

disk 4 is in a predetermined position and thus holds or locks the same against movement in either direction.

The sllding member or locking bolt 91is slidably mounted in a suitable support or bearing 10 upon the base 1 and is moved into and out ofthe notch 8 by means of the operating lever 11.1 This operating lever 11 is normally held in the position shown in Fig. 1 by .meansof the spring 12, inwhich position the, locking bolt 9 is inoperative.

An extending arm. from the operating lever 11 carriesan armature 1 3 which is operated upon by: the electromagnet coil 14 for movmg the operatinglever 11 and: the locking bolt 9into its operative position whencur rent flows through the coil 14-, as will be readily understood by reference to Fig.1 of the drawings. A terminal block 15 may be mounted upon the base 1 to provide for the electrical connections for the current supply to the coil 14. y

A pin 16 in the locking bolt 9 is so positioned as to engage a double pawl 17, which is pivotally mounted upon the support 10. y This pin 16 when in the position shown in n Fig. 1 acts as a stop for holdingthe pawl 17 out of engagement with the ratchet teeth on the ratchet disk 6. a

A latch 18 is held by means of aspriugj 19 with oneend in engagement with the pawl 17, the opposite end of the latch 18 being ,pivotally mounted at one end of a cam operated lever 20, which is held by means of the spring 21 with its opposite end in engagement with the cam 5. l

One of the uses for which this device is adapted is in connectionwith the operating mechanism of an elevator. WVhen used in this connect1on the arm 31s connected to the starting or. controlling mechanism of the ele- I vator car and may be arranged to lock the controlling mechanism under certainconditions in its stop position. The normal stop position of the locking device withrelation to the stop position of the controlling mech anism is not the same at all times but varies somewhat due to the stretching of the cables and other causesso thatit becomes impor tant in this connection to provide for locking the controlling imechanism to prevent its movement or operation awayfmm its. normal stop position. :In this; case the normal stop position wouldbe with the notch 8 opposite the end of the locking bolt 9 so that 1 when the circuit is closed through the mag- 1 net coil 14: the armature 13 will be attracted and the operating lever 9 caused to move the locking bolt into the notch in the looking disk 4 in which position the operating mechanism will be held or looked as long as the current flows through the magnet coil 14.

Assuming, however, that the operating mechnism does not stand exactly in the normal stop position but slightly to one side thereof when the circuit is closed through the magnet coil l l, the upper end of the locking bolt 9 will rest upon the periphery of the locking disk 4.. The movement of the locking bolt 9 carries the pin 16' out of engagement with the pawl 17 and permits the left end of the same to move from its position as shown in Fig. 1 and to engage the ratchet teeth on the "periphery of the ratchet disk 6, the pawl being operated by the latch 18 which engages one of the inclined sides thereof, as shown in Fig. -1. When the parts" are in this position it will be seen that the pawl 17 will prevent the shaft 2 from being rotated in a counter-clockwise direction but will permit movement in a clockwise direction, consequently, it is only possible for the operator to move the operating mechanism toward the 7 normal or stop position and as soon as it has reached this position the locking bolt 9 will enter the notch 8 and lock. the mechanism against movement in either direction, as ex plained above.

Should the operating mechanism have been moved to the other side. of its normal stop position the cam 5 will have been rotated, causing the inclined portion 22 of the cam ,face to move the upper end of the cam lever 20 to the right and its lower end carrying the latch 18 to the left. This movement causes the end of the latch 18 to pass over the extreme lower edge of the pawl 17 to the oppositely inclined face thereof, setting the pawl 17 in position to be operated to engage the oppositely inclined ratchet teeth of the ratchet disk 6 in a manner like that just, described for its operation on theother side.

A further object of the pin 16 which is carried by the locking bolt 9 is to engage the pawl 17 when the circuit is opened through the magnet coil 14, whichpermits the operating lever 11 and locking bolt 9 to be moved downwardly by the spr1ng'12 to their in operative position. It will thusbe seen that with this arrangement the device may be operated not only to lock in a certain position but to automatically prevent any move- 7 ment of the mechanism in either direction away from this locking position regardless of which side of this position the mechanism stands when the device is operated.

As many changes could bemade in the 7 above construction and many apparently widely different embodiments of my invention designed without departing from' the scope of the appended claims, I intend that all matter contained in the above description or shown in. the accompanying drawings shall be lnterpreted as illustrative merely of ,an operative embodiment of my invention and not in. a limiting sense.

What I claim is: p 1. In a locking device, 111 combinatlon, a

" movable locking member, a locking bolt adapted to lock said member against movement in either direction, a movable ratchet member having two sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent movement of said ratchet member in one direction, means for setting said pawl in position to engage one of said sets of ratchet teeth, means for holding said pawl in an inoperative position, and means for operating said locking bolt and releasing said pawl.

2. In a locking device, in combination, a movable locking member, alocking bolt adapted to lock said member against move ment in either direction, a movable ratchet member having two sets o-f teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent movement of said ratchet member in one direction, means for setting said pawl in position to engage one of said sets of ratchet teeth, means controlled by said locking bolt for holding saidpawl in an inoperative position, and means for operating said locking bolt and releasing said pawl.

3. In a locking device, incombination, a movable locking member, a locking bolt adapted to lock said member against move ment in either direction, a movable ratchet member having two sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent movement of said ratchet member in one direction, means for setting-said pawl in posit-ion to engage one of said sets of ratchet teeth, means for holding said pawl in an inoperative position and for restoring the same to said position, and means for operating said locking bolt and releasingor restoring said pawl in position to engage said ratchetteeth.

4:- In a locking device, in combination, a movable locking member, a locking bolt adapted to lock said member against movement in either direction, a movable ratchet member having two sets of teethinclined in opposite direct-ions, a pawl adapted to engage either of saidsets of teeth and prevent movement of said ratchet fmemberin one direction, means for setting said pawl in position to engage one of said sets of tive position, and means for operating said locking bolt and releasing said pawl.

5. Ina locking device, in combination, a

' ment in either direction, amovable ratchet member having two sets ofteeth inclinedin opposite directions, a pawl adapted to engage either of said sets of teeth and prevent movement of said ratchet member inone direction, means for setting said pawl in position to engage one of said sets of ratchet teeth, a cam operatively and adjnstably connected with said lockingiinember and ratchet member andada'pted to operate sa d means,

means for holding said pawl in an inopera tive position, and means-,for operating said locking bolt and releasing saidpawl.

6. In a locking device,in combination, a movable locking member, a locking bolt adapted to lock said member against move ment in either direction, amovable ratchet member havingtwo sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent movement of said ratchetmember in one direction, means for setting said, pawl in position to engage one of said sets of ratchet teeth, a camoperatively connected with said locking member and ratchet member and adapted to operate said means, means permitting the adjustment of the relative position of said locking member ratchet memher and cam, means for holding said pawl in an inoperative position, and means for opcrating said locking bolt'and releasing said pawl. c i

7 In a lockingdevice, in combination, a movable locking member; a locking bolt adapted to lock said member against movement in either direction, a movable ratchet member having two sets of teeth inclined in opposite directions, apawladapted to engage either of said sets of teeth and prevent movement of said ratchet member in one direction, a cam operatively connected with said locklng member and i'ratchet member and adapted to operate a lever engaged thereby, a lever adapted m1 be operated by said cannmeans carried ,by said lever for setting sald pawl in posit on to engage one of said sets of ratchet teeth, means for holding said pawl in an inoperative position, and

movable locking member, a locking bolt adapted to locksaid member against movement in either directionya movable ratchet member having two sets ofteeth inclined in opposite directions, a pawl adapted to engage i either of said setsof teeth and prevent movement of said ratchet member in one direction,

a cam operat-ively connected with said locking member and ratchet member and adapted to operate a lever engaged thereby, a lever operated by said cam, a sprmgpressed latch carried by said lever engaging said pawl and adapted to move the same in position to engage one of said sets ofratchet teeth, means for holding said pawl in an inoperative position, and meansfor operating said locking bolt and releasing said pawl.

9. In a locking device, in combination, a movable locking member, a locking bolt adapted to lock saidmemberagainst movement in eitherdi'rection, a movable ratchet member having two setsof teeth inclined in opposite directions, a pawl adaptedto engage either of said sets of teeth and prevent movement of said ratchet member in one direction, means for setting said pawl in posi-; tion to engageone of said sets of "ratchet teeth, said pawl also havingoppositely ine clined faces adapted to be engaged bysaid means, a cam operatively connected with said locking member and ratchet member, a lever engaged and adapted to be operated by said cam, means for holding said pawl in an inoperative position, and means for operating said locking bolt and releasing saidpawl. i i 10. In a lockingdevice, jincombination, a rotatable locking disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adapted toengageeitber of said sets of teethdand prevent rotation of said ratchet disk in one direction, means for settingsaid pawl in'position to engage one of saidsets of ratchet teeth, means for holding said pawl in an inoperative position, and means for operating said locking, bolt and releasing said pawl.

11. In a locking device, in combination, arotatable locking disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adapted to engage either ofsaid sets of teeth and prevent rota iio tion of saidratchet disk in one direction,

means for setting, saidfpawl in position to engage one of said sets of ratchet teeth, means controlled by said locking bolt for holdingsaid pawlin an inoperative position, and means for operating said locking bolt and releasing said pawl. I 12. In a locking device, 1n col'nblnation,

a rotatable looking a disk, a locking bolt adapted tolock saiddisk against movement ineither directionfa rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets ofteethand prevent rota tion of said ratchetdisk in one direction,

means for setting said pawl in position to engage one of said sets ,of ratchet teeth,

means for holding said pawl in an inoperativeposition and forrestormg the same to said position, and means for operatingsaid locking bolt and releasing orjrestoring said pawl in position to, engage said ratchet-teeth.

13. In a locking device, in combination, a rotatable locking disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk 'havingtwo sets of teeth inclined in oppofor operating said locking bolt and releasing said pawl.

14. In a locking device, in combination, a rotatable locking disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent rotation of said ratchet disk in one direction, means for setting said pawl in position to engage one of said sets of ratchet teeth, a cam operatively and adjustably connected with said locking disk' and ratchet disk and adapted to operate said means, means for holding said pawl in an inoperative position, and means 'for operating said locking bolt and releasing said pawl. i

15. In a locking device, in combination, a rotatable disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent rotation of said ratchet disk in one direction, means for setting said pawl in position to engage one vof said. sets of ratchet teeth, a cam operatively connected with said locking disk andratchet disk and adapted to operate said means, means permitting the adjustment of the relative position of said locking disk, ratchet disk and cam, means for holding said pawl in an inoperative position, and means for operating said locking bolt and releasing said pawl.v I

16. In a locking device, in combination, a

rotatable locking disk, a locking bolt adapte ed to lock said disk'against movement in either directlon, a rotatable ratchet disk having two sets of teeth inclined in opposite dlrectlons, a pawl adapted to engage either of said sets of teeth and prevent rotation of said ratchet disk in one direction, a

cam operatively connected with said look ing disk and ratchet disk and adapted to operate a lever engaged thereby, a lever operated by said cam, means carried by said lever for setting said pawl in position to engage one of said sets of ratchet teeth, means for holding said pawl in an inoperative position, and means for operating said locking bolt and releasing said pawl.

17. In a locking device, in combination, a rotatable locking disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adaptedto engage either of said set-s of teeth and'prevent rotation of said ratchet disk in one direction, a cam operatively connected with said locking disk and ratchet disk and adapted to operate a lever engaged thereby, a lever operated by said cam, a spring pressed latch carried by said lever engaging said pawl and adapted to movethe same in position to engage one of said sets of ratchet teeth, means for holding said pawl in an inoperative position, and means for operating said locking bolt and releasing said pawl.

18. In a locking device, in combination, a rotatable locking disk, a locking bolt adapted to lock said disk against movement in either direction, a rotatable ratchet disk having two sets of teeth inclined in opposite directions, a pawl adapted to engage either of said sets of teeth and prevent rotation of said ratchet disk in one direction, means for setting said pawl in position to engage one of said sets of ratchet teeth, said pawl also having oppositely inclined faces adapted to be engaged by said means, a cam operatively connected with said locking disk and ratchet disk, a lever engaged and adapted to be operated by said cam, means for holding said pawl in an inoperative position, and means for operating said locking bolt and releasing said pawl.

Signed at New York city, N. Y., in the county and State of New York, this 7th day of march, 1912. i

7 JAMES A. KEYES. 1 Witnesses:

, WILLIAM, N. Brennan, Lotns Srnnow.

Copies of this patent may be obtained for fivecents each, by addressing the Commissioner of Patents, Washington, D. C. 

